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2015 GMC Sierra Bulb Size Chart

Bulb sizes may vary by trim, factory lighting package, region, production date, and previous modifications. Verify the bulb number on your existing bulb before buying.

Last database update: May 2026. Manual review status: Manually reviewed 2026-05-17.

Audit priority: High traffic truck.

Verify before buying: check the bulb number printed on your existing bulb, confirm your trim and factory lighting package, and review the seller's fitment notes.
Disclosure: We may earn a commission from links marked Affiliate. Unmarked retailer links may be plain search links. Always verify bulb fitment before purchasing.

2015 GMC Sierra Bulb Size Chart

PositionBulb CodeAliasesTrim / PackageFactory TypeConfidenceReviewNotesShop
Turn Signal Front7443—Standard listingHalogenHigh
Verified2026-05-17

2015 GMC Sierra: AUXITO and CarClubsUSA list 2014-2015 Sierra 1500 headlight, fog, turn, marker, reverse, and stop/tail bulb families with Denali/LED package caveats. Current turn_signal_front row is consistent with the audited source family; verify trim and factory lighting package before purchase.

Amazon
Daytime Running9012HIR2Standard listingHalogenHigh
Verified2026-05-17

2015 GMC Sierra 1500: GMC owner manual describes the DRL/automatic headlamp behavior and lists the high/low-beam headlamp replacement as HIR-2 (9012 LL). CarClubsUSA, LightningLab, ModifiedLife, and AUXITO also list the 2015 Sierra daytime running/headlamp family as 9012. Current daytime_running row is consistent for non-LED headlamp applications; verify trim and factory lighting package before purchase.

Amazon
Low Beam9012HIR2Standard listingHalogenHigh
Verified2026-05-17

2015 GMC Sierra: AUXITO and CarClubsUSA list 2014-2015 Sierra 1500 headlight, fog, turn, marker, reverse, and stop/tail bulb families with Denali/LED package caveats. Current low_beam row is consistent with the audited source family; verify trim and factory lighting package before purchase.

Amazon
Fog LightH11H8 / H9 / H16If equipped / package-dependentHalogenHigh
Verified2026-05-17

2015 GMC Sierra: AUXITO and CarClubsUSA list 2014-2015 Sierra 1500 headlight, fog, turn, marker, reverse, and stop/tail bulb families with Denali/LED package caveats. Current fog_light row is consistent with the audited source family; verify trim and factory lighting package before purchase.

AmazoneBay
Parking Light7443—Standard listingHalogenHigh
Verified2026-05-17

2015 GMC Sierra: AUXITO and CarClubsUSA list 2014-2015 Sierra 1500 headlight, fog, turn, marker, reverse, and stop/tail bulb families with Denali/LED package caveats. Current parking_light row is consistent with the audited source family; verify trim and factory lighting package before purchase.

Amazon
Side Marker194—Standard listingHalogenHigh
Verified2026-05-17

2015 GMC Sierra: AUXITO and CarClubsUSA list 2014-2015 Sierra 1500 headlight, fog, turn, marker, reverse, and stop/tail bulb families with Denali/LED package caveats. Current side_marker row is consistent with the audited source family; verify trim and factory lighting package before purchase.

Amazon
License PlateW5W—Standard listingHalogenHigh
Verified2026-05-17

2015 GMC Sierra: AUXITO and CarClubsUSA list 2014-2015 Sierra 1500 headlight, fog, turn, marker, reverse, and stop/tail bulb families with Denali/LED package caveats. Current license_plate row is consistent with the audited source family; verify trim and factory lighting package before purchase.

Amazon
Reverse Light921—Standard listingHalogenHigh
Verified2026-05-17

2015 GMC Sierra: AUXITO and CarClubsUSA list 2014-2015 Sierra 1500 headlight, fog, turn, marker, reverse, and stop/tail bulb families with Denali/LED package caveats. Current reverse_light row is consistent with the audited source family; verify trim and factory lighting package before purchase.

Amazon
Brake Light7444—Standard listingHalogenHigh
Verified2026-05-17

2015 GMC Sierra 1500: GMC owner manual lists the rear Stoplamp/Taillamp/Turn Signal Lamp as 7444 LL and the Center High-Mounted Stoplamp as 921LL. CarClubsUSA, LightningLab, and ModifiedLife list the rear brake light as 7444; XenonPro maps the rear brake family as 7440/7443 with summary 7443/7444. Override the current raw 921 value to 7444 for the rear brake lamp; 921 belongs to CHMSL/reverse/cargo applications.

Amazon

2015 GMC Sierra Fitment Notes

Across the 1992-2015 production range, our database shows changes in the listed Turn Signal Front, Daytime Running, Low Beam positions. Use the chart above for this 2015 model, then confirm the bulb number in your vehicle before buying.

Known fitment limitations

  • factory HID or LED packages may use different parts
  • fog lights may depend on equipment package
  • aftermarket headlight assemblies may use different bulbs
  • regional models and production-date splits may differ

See an incorrect bulb size? Submit a correction.

How do the 2015 GMC Sierra's bulbs compare to other years?

The 2015 GMC Sierra changed bulb sizes from 2013. The previous model year used a different configuration.

This bulb configuration covers the 2015 model years. ← 2013

Finding the best installation guide...

Other Sierra Years

20132012201120102009200820072006200520042003200220011998199719961995199419931992

More from GMC

10010001000 Series15015001500 Series2502500

Other Vehicles That Use 9012 / HIR2 Bulbs

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9012 / HIR2 Comparisons

9012 vs H11

Frequently Asked Questions

Our database lists 9012 for the 2015 GMC Sierra low beam headlights. Verify the bulb number on your existing bulb and confirm your trim or factory lighting package before buying.

Our database lists N/A for the 2015 GMC Sierra high beam position. Some vehicles vary by trim, lighting package, or previous housing changes.

Dim headlights on a 2015 GMC Sierra can come from aging halogen bulbs, cloudy lenses, weak electrical connections, or an incorrect bulb. Confirm the listed 9012 size against the bulb in the housing before choosing a replacement or upgrade.

Our database lists H11 for the 2015 GMC Sierra fog light position. Fog lights are often package-dependent, so verify that your vehicle is equipped with factory fog lights before ordering.

The 2015 GMC Sierra uses a dual bulb headlight system. This means you have separate bulbs for high and low beams.

LED upgrades are available for many 9012 applications, but fitment, beam pattern, dashboard warnings, and road-use legality can vary. Use products that list your exact bulb family, such as 9012 / HIR2, and verify the factory housing before buying.

Our database has a fog light entry for the 2015 GMC Sierra: H11. Fog lights may still depend on trim or equipment package.

Yes — the 2015 GMC Sierra uses different bulb sizes than the 2013 model. The 2015 generation introduced this bulb configuration.

The 2015 GMC Sierra is the only year in the 2015 generation to use the 9012 bulb for the low beam headlight.

Access varies by engine bay layout and headlight housing. Before disassembly, confirm the listed 9012 low beam size on the existing bulb or owner's manual, then follow the service procedure for your exact trim.

Rules for LED headlight retrofits vary by location and by housing type. Avoid products that create glare or lack road-use compliance claims, and check local requirements before using an LED conversion on public roads.

Replacement cost depends on bulb technology, brand, and labor access. Common halogen 9012 replacements are usually cheaper than LED conversion kits. Check seller fitment notes before comparing prices.

Halogen bulbs and LED replacements differ in output, heat behavior, beam pattern, and electronics. A correct bulb code does not guarantee a correct LED beam pattern, so verify physical fit and seller compatibility notes for the 2015 GMC Sierra.